Carrier HD42AQ252 Motor

The Carrier HD42AQ252 is a professional-grade ECM Blower Motor engineered specifically for high-efficiency performance in residential and light commercial air handlers and furnaces. As a Factory Authorized Part, this 1/3 HP, 208-230V single-phase motor ensures drop-in compatibility with Carrier, Bryant, and Payne equipment, maintaining the original AHRI rating and system static pressure requirements. Integrated ECM technology provides precise variable-speed control, which is essential for maintaining consistent CFM and improving humidity removal across the coil. This NEMA 48 frame motor features a 1/2-inch shaft diameter and is designed for counter-clockwise rotation, making it a reliable choice for field replacements where energy efficiency and low noise floor are priorities.

Key Benefits for Technicians

• Direct OEM Replacement: Replaces legacy and obsolete part numbers including HD42AQ243, HD44AR240, HD42AQ250, 1191610, HK42ER224, and HD42AQ234 without the need for mounting modifications.
• Advanced Efficiency: The Electronically Commutated Motor design significantly reduces power consumption compared to standard PSC motors, providing better airflow management.
• Rugged Build Quality: Features permanently lubricated ball bearings and Class B insulation for continuous duty (S1) operation in demanding HVAC environments.
• Precise Fitment: Designed for belly band mounting with a standard 3.92-inch shaft length, ensuring standard blower wheel alignment.

Common Questions

Is this motor programmed for my specific unit?
As a Factory Authorized OEM part, the HD42AQ252 comes with the correct manufacturer programming to interface with your system's control board for proper ramping and torque profiles.

Can I use this to replace a standard PSC motor?
This is a direct ECM replacement. While ECMs offer superior efficiency, they require specific control signals; verify your existing wiring harness and control board support 230V ECM communication before installation.

What is the rotation direction?
This motor is rated for Counter-Clockwise (CCW) rotation as viewed from the lead end/back of the motor.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.